<!doctype html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <title>视频转音频</title>
</head>
<body>
<h1>上传视频提取音频</h1>
<form action="/extract_audio" method="post" enctype="multipart/form-data">
    <input type="file" name="video">
    <button type="submit">上传</button>
</form>
</body>
</html>
